angular-cn/tools/broccoli/broccoli-flatten.ts

55 lines
1.8 KiB
TypeScript

import fs = require('fs');
import fse = require('fs-extra');
import path = require('path');
import {wrapDiffingPlugin, DiffingBroccoliPlugin, DiffResult} from './diffing-broccoli-plugin';
import {AngularBuilderOptions} from './angular_builder';
var symlinkOrCopy = require('symlink-or-copy').sync;
var isWindows = process.platform === 'win32';
/**
* Intercepts each changed file and replaces its contents with
* the associated changes.
*/
export class DiffingFlatten implements DiffingBroccoliPlugin {
constructor(private inputPath: string, private cachePath: string,
private options: AngularBuilderOptions) {}
rebuild(treeDiff: DiffResult) {
let pathsToUpdate = treeDiff.addedPaths;
// since we need to run on Windows as well we can't rely on symlinks being available,
// which means that we need to respond to both added and changed paths
if (isWindows) {
pathsToUpdate = pathsToUpdate.concat(treeDiff.changedPaths);
}
pathsToUpdate.forEach((changedFilePath) => {
var sourceFilePath = path.join(this.inputPath, changedFilePath);
var destFilePath = path.join(this.cachePath, path.basename(changedFilePath));
var destDirPath = path.dirname(destFilePath);
if (!fs.existsSync(destDirPath)) {
fse.mkdirpSync(destDirPath);
}
if (!fs.existsSync(destFilePath)) {
symlinkOrCopy(sourceFilePath, destFilePath);
} else {
throw new Error(`Duplicate file '${path.basename(changedFilePath)}' ` +
`found in path '${changedFilePath}'`);
}
});
treeDiff.removedPaths.forEach((removedFilePath) => {
var destFilePath = path.join(this.cachePath, path.basename(removedFilePath));
fs.unlinkSync(destFilePath);
});
}
}
export default wrapDiffingPlugin(DiffingFlatten);